import os

from flask import Flask


def create_app(test_config=None):
    # create and configure the app
    # flask 默认static在static路径下面，我们这里需要改成"",为了满足计算组的合并需求：compute/static
    app = Flask(__name__, instance_relative_config=True, static_folder="")
    app.config.from_mapping(
        SECRET_KEY='dev',
        DATABASE=os.path.join(app.instance_path, 'flaskUI.sqlite'),
    )

    if test_config is None:
        # load the instance config, if it exists, when not testing
        app.config.from_pyfile('config.py', silent=True)
    else:
        # load the test config if passed in
        app.config.from_mapping(test_config)

    # ensure the instance folder exists
    try:
        os.makedirs(app.instance_path)
    except OSError:
        pass

    # a simple page that says hello
    @app.route('/hello')
    def hello():
        return 'Hello, World!'


    # from . import auth
    # app.register_blueprint(auth.bp)

    # from . import blog
    # app.register_blueprint(blog.bp)

    from . import k8s
    app.register_blueprint(k8s.bp)

    app.add_url_rule('/', endpoint='compute/new/base')

    return app

